(looks can in general be used, the part that remains is about recognition of project
membership)
- implement all heuristics: activated nodes, menu on editor tab
- instances from Lookup covered by new settings framework (ProjectConvertor)
- current project: indication, ProjectSensitiveAction

The projects, java and web modules are adapted to use new Looks API.
All looks written by modules and used for visualization of objects
under the project's node can use Lookup of Look.NodeSubstitute passed
to their methods and ask it for Project.class. The Project.find method
shouldn't be used anymore.